MSG security told Nick Mangold to cool it during the NYR's loss last night

Mangold, wearing a blue Rangers sweater during the Penguins’ 3-1 Game 3 victory, exhibited similar behavior during a Rangers game against the Stars on Jan. 5. On Tuesday he was seen giving it to the Penguins before they took the ice in the third period, and was so out of control, security came over a few times to tell him to calm down, a source said. The Rangers declined to comment.